select the correct answer from each drop-down menu.
carbohydrates are the primary source of energy for the human body.
if your body lacks enzymes that break down carbohydrates, it would be unable to get
you lacked the enzyme to digest proteins, you may not absorb enough
for energy production.

The hypothesis of continental drift states that earth's continents, which are located on tectonic plates, move relative to each other. which of the following is true of the movement of the tectonic plates? a. tectonic plates only move once every million years. b. they move at a rate of approximately 5 centimeters per year. c. tectonic plates never move, only the continents located on them do. d. their movements are very rapid and occur at random times.

How does an angiosperm prevent self pollination

Why are scientists concerned about the depletion of the ozone levels in the stratosphere?